#040901
Closest named color: Almost Black (#070D0D). oklch(12.8% 0.029 131.2), rgb(4, 9, 1).
Aa
White text reads best on this color (20.10:1).
About this color
#040901 is a very dark close to neutral grey. In OKLCH its lightness is 13%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Almost Black (#070D0D), ΔE 0.035 away. White text reads best on it, at 20.10:1.
| Hue family | Neutrals |
| Lightness | very dark (13%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Almost Black (#070D0D) |
| Black text | 1.04:1 |
| White text | 20.10:1 |
Values
| HEX | #040901 |
| RGB | rgb(4, 9, 1) |
| HSL | hsl(98, 80%, 2%) |
| OKLCH | oklch(12.8% 0.029 131.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #040901 | 20.10:1 | AAA | Lc -107.8 | Preferred for body text |
| Black text on #040901 | 1.04:1 | Fails | Lc 0.0 | Not readable |
| #040901 text on white | 20.10:1 | AAA | Lc 105.9 | Preferred for body text |
| #040901 text on black | 1.04:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F4F6F3
oklch(97.1% 0.004 134.8)
-
Step 100
100
#E7EBE5
oklch(93.5% 0.009 134.9)
-
Step 200
200
#D5DCCF
oklch(88.5% 0.019 130.2)
-
Step 300
300
#B9C6AF
oklch(81% 0.035 131.4)
-
Step 400
400
#95A885
oklch(70.7% 0.054 130.9)
-
Step 500
500
#7B9266
oklch(63% 0.069 130.6)
-
Step 600
600
#637D4D
oklch(55.7% 0.077 131.6)
-
Step 700
700
#52693E
oklch(49.1% 0.071 131.5)
-
Step 800
800
#445633
oklch(42.8% 0.059 130.7)
-
Step 900
900
#39472D
oklch(37.8% 0.046 131.3)
-
Step 950
950 (this color)
#040901
oklch(12.8% 0.029 131.2)
#040901 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0A0801 | 0.016 |
| Deuteranopia (no green cones) | #090701 | 0.016 |
| Tritanopia (no blue cones) | #040807 | 0.024 |
| Achromatopsia (no color) | #070707 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #040901
#040901
oklch(12.8% 0.029 131.2)
- #0A040F
#0A040F
oklch(12.6% 0.03 310.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #040901, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Almost Black #070D0D ΔE 0.035
- Rich Navy #001219 ΔE 0.059
- Very Dark Brown #1D0200 ΔE 0.068
- Rich Black #0D1B2A ΔE 0.105
- Midnight #03012D ΔE 0.112
- Dark Navy Blue #00022E ΔE 0.112
- Dark Navy #000435 ΔE 0.121
- Very Dark Blue #000133 ΔE 0.122
Use #040901 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.